What does it mean to me to be human? That's a tough question.
Firstly, being human means to me that I reflect about myself, my actions, and my environment. I can even reach a meta level and reflect about me reflecting about this question right now.
Secondly, I think that people want to reach bliss (I hope this is the correct English term for this notion). Most of our life consists of the pursuit of happiness. Bliss would be something like permanent happiness, if you excuse my sloppy explanation.